Gilberto Freyre (1900-1989) is an intellectual who became very famous in the world mainly due to the work that marked his career still in its early days, Casa-Grande & Senzala (1933). This dissertation, however, was the result of a research that sought to analyze another episode of its long trajectory: Gilberto Freyre s trip to Portugal and its colonies in 1951 and 1952. In a non-coincident way, at that moment Portugal went through the government of Oliveira Salazar, as well as the consequences of the end of World War II. Gilberto Freyre, on the other hand, developed what would be his most controversial theory, Lusotropicalismo. The trip made by Freyre was crucial for the development and diffusion of his theory, as well as of extreme importance for the construction of a discourse directed to the Portuguese external relations, in defense of the permanence of the colonies. Two books are crucial to analyze this trip and its implications: Adventure and Routine - suggestions of a trip in search of the Portuguese constants of character and action (1953) a sort of Freyre travel diary and A Brazilian in Portuguese lands. Introduction to a possible Luso-tropicology accompanied by lectures and speeches given in Portugal and in Lusitanian and former Lusitanian lands in Asia, Africa and the Atlantic (1953), a collection of conferences and speeches given during the trip, both constitute a source documentary of this research, providing considerable material for the analysis of Freyre s voyage.